Watson described the purpose of psychology as: âTo predict, given the stimulus, what reaction will take place; or, given the reaction, state what the situation or stimulus is that has caused the reactionâ (1930, p. 11). * All behavior is learnt from the environment.
Additional tests including penetration,solubility, and ductility are made on the residue. Cutback asphalt grades and tests There are several grades for each of the three types ofcutbacks â rapid curing (RC), medium curing (MC), andslow curing, (SC). The grades include 70, 250, 800, and3000.
Asphalt pavement is composed of the following two layers, the. wearing course and the base course: The Wearing Course transfers and distributes traffic loads to the. base course. The wearing course is actually composed of two. layers, a 1-1/4 to 1-1/2 surface layer and a 3 bonding layer. The. bonding course penetrates voids in the sub base and binds the. wearing course to the sub base aggregate. The thickness of the. wearing course varies according to intended use, the materials.